active baxandall after 386??

[richon]

as a new project I was thinking to test an active baxandall after 386...

but then i remeber that 386 likes to se 16ohms over 4 ohms (for example) but the active baxandall would work with a dual TL072 whichs works with highimpedance imput

would this make some posible incompatibilitys with the 386 output and the TL072 input?

[liquids]

A Fine idea. 386 following anything will work fine so long as it's not clipping the input of the following device.  I don't know how well the 386 swings peak to peak.

Anyhow, it would take a lot of work to design a baxandall that makes the 386 only see 16 ohms, let alone 4 ohms, like a speaker.  So Give it a go!  

I think a well tuned baxandall boost for bass is the ideal follower for preamp gain pedals, as it can recover far more bass than most distortion designs ever to cut in order to keep things from getting muddy at the 'input' of inter-stage.  This is often what leads to pedals sounding 'boxy' - unlike a good amp which really beefs up the lows to the ear, a good bass boost goes a long way after a stompbox-based gain pedal

Also, keep an active two-pole LPF (can be completely controllable via a dual gang pot) in mind as well, which is an awesome tone control for trimming high end, far more powerful than passive LPF.  I use both in a lot of my designs.